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Old 17th December 2019 | 13:08
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Dave Therhino
 
Joined: Jan 2013
Posts: 263
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From: Seattle Area
Any airplane with a pressure fueling system is going to have a volume based cutoff at the maximum allowed fuel volume for each tank (leaving the required expansion space). This feature is required by FAR/CS 25.979(b). On some airplanes it's float switch driven, and on others it's capacitive probe driven. Boeing uses the term volumetric top off, or VTO, for their feature in their literature. I don't know if Airbus uses the same name.
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